refactor to group up more commonly used git command stuff

pkg/commands/git_commands/common.go

@@ -0,0 +1,34 @@
+package git_commands
+
+import (
+	gogit "github.com/jesseduffield/go-git/v5"
+	"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
+	"github.com/jesseduffield/lazygit/pkg/common"
+)
+
+type GitCommon struct {
+	*common.Common
+	cmd       oscommands.ICmdObjBuilder
+	os        *oscommands.OSCommand
+	dotGitDir string
+	repo      *gogit.Repository
+	config    *ConfigCommands
+}
+
+func NewGitCommon(
+	cmn *common.Common,
+	cmd oscommands.ICmdObjBuilder,
+	osCommand *oscommands.OSCommand,
+	dotGitDir string,
+	repo *gogit.Repository,
+	config *ConfigCommands,
+) *GitCommon {
+	return &GitCommon{
+		Common:    cmn,
+		cmd:       cmd,
+		os:        osCommand,
+		dotGitDir: dotGitDir,
+		repo:      repo,
+		config:    config,
+	}
+}